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Milissacarter · 05-29-2024

I connected the nest thermostat wire to the Google power connector according to the wiring instructions red to red, white to white, and then the power connector to the tekmar256 common to common, red to red, white to thermostat. The nest has power an...

Milissacarter · 06-03-2024

The google power converter is considered an external 24-vac transformer. When the power converter is connected the thermostat is powered, wifi connected, controlled at the device and wirelessly, however doesn't start the boiler when turned on.

Milissacarter · 05-30-2024

Thank you. I did try that and it worked, however the boiler didn’t turn off when I turned the thermostat down. And the Nest complained that I need the power adapter.

Milissacarter · 05-29-2024

I am located in the US. I am not looking to replace the Tekmar 256, rather connect the Nest to it. I don’t have a picture of the original wiring. I only changed two wires, moving them from the Tekmar to the power connector and then connecting the pow...

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Tekmar 256 not connecting with nest

Re: Tekmar 256 not connecting with nest

Re: Tekmar 256 not connecting with nest

Re: Tekmar 256 not connecting with nest